Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Support\Arrayable' not found in /var/www/html/test-project/my-app/vendor/laravel/framework/src/Illuminate/Testing/Fluent/AssertableJson.php:13 Stack trace: #0 {main} thrown in /var/www/html/test-project/my-app/vendor/laravel/framework/src/Illuminate/Testing/Fluent/AssertableJson.php on line 13